GroundLoop vs CNC Path

GroundLoop is the grounding field companion for electrical engineers, contractors, and tower techs — fully offline, no account, no subscription. SOIL RESISTIVITY Enter Wenner four-pin or Schlumberger readings and get apparent resistivity per spacing instantly, with probe-depth correction, anomaly flags for layered soil, and a resistivity-vs-spacing curve you can read at the truck. ELECTRODE ESTIMATES Size a single rod, a multi-rod array, or a grid (Sverak screening formula) and compare against your target — 25 ohms (NEC 250.53), 5 ohms, or a custom spec. Every result shows the formula reference it came from. FALL-OF-POTENTIAL TESTS Enter your current-probe distance and GroundLoop lays out the 52/62/72% voltage-probe positions, then checks your three readings for a valid plateau — so a bad test gets caught in the field, not back at the office. FIELD REPORTS Export a clean PDF per site: resistivity tables, electrode estimates with formula references, fall-of-potential records, and date — ready for your project file. FREE TO TRY One site with every tool unlocked, reports watermarked. One-time purchase removes the watermark and the site limit. No subscription, ever. GroundLoop is a field calculation and recording aid. It encodes textbook formulas with cited references (values pending professional-engineer review are labeled in-app); it is not a substitute for a licensed PE's design, the governing standard, or required field verification.

CNC Path is an iPhone and iPad workspace for CNC professionals and learners to manage, edit, OCR-import, and visualize supported CNC programs. Key features: - Create, organize, import, and export CNC programs in a local Program Library - View and edit CNC program text with a mobile-friendly editor - Import programs from camera or images with on-device OCR and review the result before saving - Look up CNC instructions and their current support boundaries - Run lightweight toolpath simulation for supported basic instructions - Use OCR, import/export, syntax checking, and advanced macro-program, fixed-cycle, and arithmetic-expression simulation The Program Library, editing, instruction reference, and ordinary supported simulation remain free. OCR, import/export, syntax checking, macro programs, fixed cycles, and arithmetic-expression simulation require an active trial or membership. The seven-day trial starts only when selected and does not renew or charge. Monthly and Pro Lifetime Unlock prices are shown by the App Store. CNC Path provides auxiliary toolpath visualization only. It does not guarantee collision detection, machining safety, or complete real-machine verification. Users must manually verify OCR results and CNC programs.